Formulating Physicalism

Stalking the elusive physicalist thesis Content Type Journal Article Pages 1-5 DOI 10.1007/s11016-011-9528-2 Authors D. Gene Witmer, Department of Philosophy, University of Florida, P. O. Box 118545, Gainesville, FL 32611-8545, USA Journal Metascience Online ISSN 1467-9981 Print ISSN 0815-0796.

This correction reflects that I forgot to cite Stephan Leuenberger's unpublished work in the paragraph beginning "More promising, perhaps, is the orthodox view ..." in Section 5. The overall argument of Section 5 is a development of an argument I gave in footnote 27 of 'No Work for a Theory of Grounding' (Inquiry, 2014). At issue in the relevant sections of 'No Work...' and 'Grounding-based Formulations...' is whether a proponent of Grounding has resources to accommodate strongly emergent phenomena, where strong (...) emergence is understood as contrasting with physicalism. In 'No Work...', after arguing in the text that an account of strong emergence as involving a failure of full Grounding would not accommodate the live possibility that strongly emergent goings-on might be partially but not completely metaphysically dependent on physical goings on, I considered in note 27 whether strong emergence, again understood as contrasting with physicalism, could be characterized by appeal to a Finean notion of partial Grounding, as the view that strongly emergent goings-on are partially but not fully Grounded in physical goings-on, and I argued that assuming that the notion of partial Grounding was taken to be primitive, then (since there were no prospects of defining full Grounding in terms of primitive partial Grounding along lines of defining a general notion of parthood in terms of primitive proper parthood or identity), such an approach would require that full Grounding also be taken as primitive, with possibly yet another primitive connecting partial and full Grounding. -/- I heard Leuenberger's talk 'Emergence and Failures of Supplementation' in May 2015; for purposes of developing my previous argument (as per Section 5 in 'Grounding-based Formulations...') this talk was helpful since Leuenberger correctly argued that there were also no prospects for implementing the partial Grounding-based strategy by taking full Grounding to be primitive and defining partial Grounding in terms of full Grounding, since that would import a weak supplementation structure that might not be present in cases of strong emergence. I wrote to Leuenberger asking for his slides so that I could reference him and his work (which again is presented in the paragraph beginning "More promising, perhaps, is the orthodox view..."), but somehow forgot to include a citation to his talk, for which I sincerely apologize. -/- One last thing: the erratum is a bit misleading about my use of Leuenberger's work. My discussion of whether a primitivist (i.e., 'non-orthodox') understanding of Finean partial Ground serves as a suitable basis for a partial Grounding-based approach to strong emergence stems from footnote 27 of my 2014, not Leuenberger's 2015 talk, and in both 'No Work...' and 'Grounding-based Formulations...' I argue that such an approach would be problematic, not "suitable", since involving two or three primitives. Also worth noting is that I do not claim or argue that the orthodox conception of partial Grounding as defined in supplementary fashion in terms of full Grounding is *incompatible* with strong emergence. Again, at issue in both 'No Work...' and in 'Grounding-based Formulations...' is strong emergence understood as contrasting with physicalism, so the relevant application of a partial Grounding-based strategy, whether or not involving an 'orthodox' account of partial Grounding as definable in terms of full Grounding, is in my papers one according to which strongly emergent goings-on are partially but not fully Grounded in *physical* goings-on. So far as I can tell, there might be cases of strong emergence that *do* obey supplementation, and which would be compatible with a partial Grounding-based account of strong emergence, where the operative notion of partial Grounding is 'orthodox' (non-primitive). For my purposes, what is important is that cases of strong emergence might not obey supplementation. (shrink)

Contrary to the widely-held view that our conscious states are necessarily private (in that only one person can ever experience them directly), in this paper I argue that it is possible for a person to directly experience the conscious states of another. This possibility removes an obstacle to thinking of conscious states as physical, since their apparent privacy makes them different from all other physical states. A separation can be made in the brain between our conscious mental representations and the (...) other executive processes that manipulate them and are guided by them in planning and executing behaviour. I argue here that these executive processes are also largely responsible for producing our sense of self in the moment. Our conscious perceptual representations themselves reside primarily in the posterior portions of the brain's cortex, in the temporal and parietal lobes, while the executive processes reside primarily in the prefrontal lobes. We can imagine an experiment in which we sever the association fibers that connect the posterior regions with these prefrontal regions and, instead, connect the posterior regions to the prefrontal regions of another person. According to my hypothesis, this would produce in the latter person the direct experience of the conscious perceptual states of the first person. (shrink)

A venerable tradition in the metaphysics of science commends ontological reduction: the practice of analysis of theoretical entities into further and further proper parts, with the understanding that the original entity is nothing but the sum of these. This tradition implicitly subscribes to the principle that all the real action of the universe (also referred to as its "causation") happens at the smallest scales-at the scale of microphysics. A vast majority of metaphysicians and philosophers of science, covering a wide swath (...) of the spectrum from reductionists to emergentists, defend this principle. It provides one pillar of the most prominent theory of science, to the effect that the sciences are organized in a hierarchy, according to the scales of measurement occupied by the phenomena they study. On this view, the fundamentality of a science is reckoned inversely to its position on that scale. This venerable tradition has been justly and vigorously countered-in physics, most notably: it is countered in quantum theory, in theories of radiation and superconduction, and most spectacularly in renormalization theories of the structure of matter. But these counters-and the profound revisions they prompt-lie just below the philosophical radar. This book illuminates these counters to the tradition principle, in order to assemble them in support of a vaster (and at its core Aristotelian) philosophical vision of sciences that are not organized within a hierarchy. In so doing, the book articulates the principle that the universe is active at absolutely all scales of measurement. This vision, as the book shows, is warranted by philosophical treatment of cardinal issues in the philosophy of science: fundamentality, causation, scientific innovation, dependence and independence, and the proprieties of explanation. (shrink)

I problematize Grounding-based formulations of physicalism. More specifically, I argue, first, that motivations for adopting a Grounding-based formulation of physicalism are unsound; second, that a Grounding-based formulation lacks illuminating content, and that attempts to imbue Grounding with content by taking it to be a strict partial order are unuseful and problematic ; third, that conceptions of Grounding as constitutively connected to metaphysical explanation conflate metaphysics and epistemology, are ultimately either circular or self-undermining, and controversially assume that physical dependence is incompatible (...) with explanatory gaps; fourth, that in order to appropriately distinguish physicalism from strong emergentism, a Grounding-based formulation must introduce one and likely two primitives in addition to Grounding (NOTE: I forgot to credit Stephan Leuenberger's unpublished work on weak supplementation concerns about an 'orthodox' partial Grounding-based characterization of strong emergence, which I present in the paragraph starting "More promising, perhaps, is the orthodox view ..."; a correction has been published); and fifth, that understanding physical dependence in terms of Grounding gives rise to ‘spandrel’ questions, including, e.g., “What Grounds Grounding?”, which arise only due to the overly abstract nature of Grounding. (shrink)

The paper discusses the criticism of externalist theories of content which, on the basis of "Twin Earth" considerations, claims that such theories cannot make intentional properties supervenient on basic, intrinsic properties of the organism -- while supervenience is a necessary condition for the causal efficacy of any macro-property. The paper accepts the supervenience requirement, understood as arising from a requirement that macro- properties should be explained by micro- properties. It points out, however, that as a consequence of this, the modality (...) in the concept of supervenience should be understood as "nomic", not conceptual. Then the paper attempts to show that the usual thought- experiments do not establish that such variety of supervenience does not hold for psychological properties -- at least with regard to a particular, teleo- functional way of interpreting them. (shrink)

How should thought and consciousness be understood within a view of the world as being through-and-through physical? Many philosophers have proposed non-reductive, levels-based positions, according to which the physical domain is fundamental, while thought and consciousness are higher-level processes, dependent on and determined by physical processes. In this book, Kevin Morris's careful philosophical and historical critique shows that it is very difficult to make good metaphysical sense of this idea - notions like supervenience, physical realization, and grounding all fail to (...) articulate a viable non-reductive, levels-based physicalism. Challenging assumptions about the mind-body problem and providing new perspectives on the debate over physicalism, this accessible and comprehensive book will interest scholars working in metaphysics, philosophy of mind, and philosophy of science. (shrink)

Bas van Fraassen claims that materialism involves false consciousness. The thesis that matter is all that there is, he says, fails to rule out any kinds of theories. The false consciousness consists in taking materialism to be cognitive rather than an existential stance, or attitude, of deference to the current content of science in matters of ontology, and a favourable attitude to completeness claims about the content of science at a time. The main argument Van Fraassen provides for saying that (...) materialism is not cognitive is an account according to which materialism has responded, so far, to changes in science by abandoning previous hallmarks of the material, and accepting new ones instead of by taking materialism to have been refuted. I argue that van Fraassen’s conclusions run far ahead of what his arguments establish. The fact of revision and revolution in the history of science, and the undoubted provisionality and incompleteness of science as we have it, do indeed tell against simply letting current science determine what the physical is for philosophical purposes. But the alternative to betting on current science need not be unconditional open-endedness. The changes that materialists have accepted so far do not, furthermore, support the false consciousness interpretation. The reason for this is not that materialists will swallow anything, but rather that the changes accepted are consistent with the truth of materialism when appropriately characterized. (shrink)

I shall argue in this article that there are certain objectual and methodological boundaries imposed by the nature of physics that all formulations of physicalism based on physical theories should respect. Therefore, empirical physicalism – i.e., the sort of physicalism that is eager to accept all the entities included in some future, ideal and complete physical theory and all entities dependent on them (see Jeffrey Poland and Janice Dowell) – is already committed to the exclusion of certain sorts of entities (...) from its ontological inventory and it is far less tolerant than one might expect. After having presented my argument, I shall describe four plausible boundaries to what can be studied by physics. The boundaries will contribute to constructing a new version of physicalism, i.e., physics physicalism, whose acceptance is entailed by the acceptance of empirical physicalism. Finally, I shall briefly deal with three objections against my strategy and I shall evaluate the consequences of the acceptance of my conclusions for both physicalists and non-physicalists. (shrink)

This paper offers a qualified defense of Terry Horgan’s view of brute, inexplicable supervenience theses as physically unacceptable—as having no place in physicalist metaphysics—and his corresponding emphasis on the importance of “superdupervenience”, metaphysical supervenience that can be explained in a “materialistically acceptable” way. I argue, in response to Tom Polger, that it may be possible to ground the physical unacceptability of brute supervenience in its relation physically unacceptable properties supervening on physical properties; moreover, I argue that Horgan’s emphasis on the (...) need for superdupervenience cannot be rejected as unreasonably demanding for the reasons that Polger offers. I furthermore respond to Jessica Wilson’s reasons for thinking that superdupervenience is neither necessary nor sufficient for physical acceptability. Reflection on these topics helps to bring out several issues about the role of supervenience in physicalist metaphysics and ultimately a problem that any supervenience-based approach to physicalism may face. (shrink)

Consciousness and Physicalism: A Defense of a Research Program explores the nature of consciousness and its place in the world, offering a revisionist account of what it means to say that consciousness is nothing over and above the physical. By synthesizing work in the philosophy of mind, metaphysics, and philosophy of science from the last twenty years and forging a dialogue with contemporary research in the empirical sciences of the mind, Andreas Elpidorou and Guy Dove advance and defend a novel (...) formulation of physicalism. Although physicalism has been traditionally understood to be a metaphysical thesis, Elpidorou and Dove argue that there is an alternative and indeed preferable understanding of physicalism that both renders physicalism a scientifically informed explanatory project and allows us to make important progress in addressing the ontological problem of consciousness. Physicalism, Elpidorou and Dove hold, is best viewed not as a thesis (metaphysical or otherwise) but as an interdisciplinary research program that aims to compositionally explain all natural phenomena that are central to our understanding of our place in nature. Consciousness and Physicalism is replete with philosophical arguments and informed, through and through, by findings in many areas of scientific research. It advances the debate regarding the ontological status of consciousness. It will interest students and scholars in philosophy of mind, metaphysics, philosophy of cognitive science, and philosophy of science. And it will challenge both foes and friends of physicalism. -/- . (shrink)

Russellian physicalism has the promise of answering all the typical challenges that non-physicalists have issued against standard versions of physicalism, while not giving up physicalism's commitment to the non-existence of fundamental mentality. However, it has been argued that Russellian physicalism must endorse the existence of physically unacceptable protomental properties in order to address these challenges, which would mean giving up on a core physicalist tenet of keeping the fundamental realm untainted by a special relationship to mentality. Against this, I argue (...) that a plausible version of Russellian physicalism can be constructed, which does not posit fundamental properties that are at all protomental in any problematic sense, yet which can explain the existence of subjective experience. This non-protomental Russellian physicalism, which is the only properly-physical version of Russellian physicalism, offers a satisfying solution to the mind-body problem -- including an answer to the conceivability argument -- without sacrificing any of its physicalist credentials. (shrink)

A review of recent work on physicalism, focusing on what it means to say nothing exists over and above the physical, how "the physical" should be defined, and the causal argument for physicalism.

Physicalism is frequently understood as the thesis that everything depends upon a fundamental physical level. This standard formulation of physicalism has a rarely noted and arguably unacceptable consequence—it makes physicalism come out false in worlds which have no fundamental level, for instance worlds containing things which can infinitely decompose into smaller and smaller parts. If physicalism is false, it should not be for this reason. Thus far, there is only one proposed solution to this problem, and it comes from the (...) so-called via negativa account of physicalism. Via negativa physicalism identifies the physical with the non-mental, such that if everything in the world ultimately depends only on non-mental things, then physicalism is true. To deal with the possibility of worlds without a fundamental level, this account says that physicalism is false in worlds with either a fundamental mental level or an infinite descent of mental levels. Here I argue that there could be a world with an infinite descent of all-mental levels, yet in which physicalism might plausibly be true—thus contradicting the sufficient-for-false condition meant to save physicalism from the threat of infinitely decomposable worlds. This leaves the need for a new dependence-based account of physicalism. (shrink)

I explore the possibility that mentality can be characterized as a level in between the functional and the neurological, namely as a physical system exhibiting a specific kind of chaos. The argument is meant to make a case for this kind of characterization rather than giving one in specific detail.

The debate over physicalism in philosophy of mind can be seen as concerning an inconsistent tetrad of theses: if physicalism is true, a priori physicalism is true; a priori physicalism is false; if physicalism is false, epiphenomenalism is true; epiphenomenalism is false. This paper argues that one may resolve the debate by distinguishing two conceptions of the physical: on the theory-based conception, it is plausible that is true and is false; on the object-based conception, it is plausible that is true (...) and is false. The paper also defends and explores the version of physicalism that results from this strategy. (shrink)

Perhaps all concrete phenomena obtain solely in virtue of physical phenomena. Even so, it seems that the world could have been otherwise. It seems that physicalism, if true, is contingently true. In fact, many believe that the actual truth of physicalism allows metaphysically possible worlds duplicating the actual world in all physical respects while containing immaterial extras, e.g. ghosts, spirits, or Cartesian souls, that no physicalist would believe actually exist. Here I focus on physicalism regarding mentality and argue that the (...) doctrine does not allow possible worlds that physically duplicate the actual world while differing mentally. By revealing what physicalism (regarding the mind) does not allow, this essay helps us get clear on what the view really amounts to and why it is contingent. (shrink)

'Microphysicalism', the view that whole objects behave the way they do in virtue of the behaviour of their constituent parts, is an influential contemporary view with a long philosophical and scientific heritage. In _What's Wrong With Microphysicalism?_ Andreas Hüttemann offers a fresh challenge to this view. Hüttemann agrees with the microphysicalists that we can explain compound systems by explaining their parts, but claims that this does not entail a fundamentalism that gives hegemony to the micro-level. At most, it shows that (...) there is a relationship of determination between parts and wholes, but there is no justification for taking this relationship to be asymmetrical rather than one of mutual dependence. Hüttemann argues that if this is the case, then microphysicalists have no right to claim that the micro-level is the ultimate agent: neither the parts nor the whole have 'ontological priority'. Hüttemann advocates a pragmatic pluralism, allowing for different ways to describe nature. _What's Wrong With Microphysicalism?_ is a convincing and original contribution to central issues in contemporary philosophy of mind, philosophy of science and metaphysics. (shrink)

This paper examines a nonreductive supervenience relation central to a philosophically popular version of nonreductive physicalism inspired by Donald Davidson. The paper argues that this global supervenience relation faces a serious epistemological problem that blocks its being superior to weaker, less general supervenience relations.

The dominant way to define physical entities is by appeal to ideal physics (as opposed to current physics). However, it has been worried that physicalism understood in terms of ideal physics would be too liberal to rule out “psychism”, the view that mentality exists at the fundamental metaphysical level. In this article, I argue that whereas physicalism is incompatible with some psychist cases, such as the case of “phenomenalism” in which ideal physics adopts mental concepts to denote fundamental entities, physicalism (...) should accommodate a certain type of psychist case in which fundamental mental entities are denoted by non-mental concepts in ideal physics. In so doing, I propose a distinctive account of physical entities, which asserts that physical entities are entities denoted by non-mental natural concepts in ideal physics. Physicalism thus understood is expected to be neither too liberal nor too demanding. (shrink)

This dissertation contains four independent essays addressing a cluster of related topics in the philosophy of mind. Chapter 1: “Fundamentality Physicalism” argues that physicalism can usefully be conceived of as a thesis about fundamentality. The chapter explores a variety of other potential formulations of physicalism (particularly modal formulations), contrasts fundamentality physicalism with these theses, and offers reasons to prefer fundamentality physicalism over these rivals. Chapter 2:“Modal Rationalism and the Demonstrative Reply to the Master Argument Against Physicalism” introduces the Master Argument (...) Against Physicalism and investigates its crucial premise: the inference from an a priori gap between the physical and consciousness to a lack of necessitation between the two. I argue against the strong form of modal rationalism that underwrites the master argument and offer a more moderate rationalist view. I offer a novel demonstrative reply to the master argument, according to which a connection between conscious experience and demonstratives, not dualism, is the source of the epistemic gap between consciousness and the physical. Chapter 3: “Conceptual Mastery and the Knowledge Argument” argues that Frank Jackson’s famous anti-physicalist knowledge argument featuring Mary, a brilliant neuroscientist raised in a black and white room, founders on a dilemma. Either (i) Mary cannot know the relevant experiential truths because of trivial obstacles that have no bearing on the truth of physicalism or (ii) once the obstacles have been removed, Mary can know the relevant truths. Chapter 4: “Toward a Theory of Conceptual Mastery” investigates the question “Under what conditions does a thinker fully understand, or have mastery of, a concept?” I argue against three views of conceptual mastery, according to which conceptual mastery is a matter of holding certain beliefs, being disposed to make certain inferences, or having certain intuitions. I propose and respond to objections to my own “meaning postulate view” of the conditions under which a thinker has mastery of a concept. (shrink)

The aim of this editorial introduction is twofold. First, Sects. 1–8 offer a critical introduction to the metaphysical character of physicalism. In those sections, I present and evaluate different ways in which proponents of physicalism have made explicit the metaphysical dependence that is said to hold between the non-physical and the physical. Some of these accounts are found to be problematic; others are shown to be somewhat more promising. In the end, some important lessons are drawn and different options for (...) physicalists are presented. Second, in Sect.9, the six papers that comprise the special issue are introduced and summarized. (shrink)

THE MIND-BODY PROBLEM: A GUIDE TO THE CURRENT DEBATE (EDITED BY RICHARD WARNER AND TA D E U S Z SZUBKA) contains recent essays by the key players in the the field of the Mind-Body problem: Searle, Fodor, Problem Honderich, Nagel, McGinn, Stich, Rorty and others. But there are a few interesting exceptions, for example Edelman, Popper, Putnam and Dennett. Nevertheless, these thinkers do get a mention here and there, and nearly all the exciting topical issues are dealt with, including (...) externalism, functionalism, intentionality, Turing computational models, and the relationship between these philosophical problems and psychology. I am particularly struck by the tendency to engage in an evasive stratagem when it comes to stating the physicalist thesis. Instead of a clear definitive position about what kind of physical science would achieve the hoped-for reduction, what I found was variations on Lewis's claim that the reduction would be effected by a "unified body of scientific theories of the sort we now accept". Materialism used to be a clear doctrine: a clockwork Universe of impenetrable particles. But materialism transcended itself. First through Hobbes' and Leibniz's criticisms of Descartes, then Newton's demolition of the Cartesian idea that matter was essentially extension by introducing gravity (action at a distance) and then through the field theories of Faraday and Maxwell, and more recently through Einstein's work, which undermined the "substance" view of matter, something that remained permanent while other changes occurred. I contrast the perspectives of the Churchlands with those of Donald T. Campbell, Karl Popper and other evolutionary and emergentist views. -/- . (shrink)

Jaegwon Kim’s argument against non-reductive physicalism is well known. Many philosophers take Kim’s argument to also apply to emergentism. But this does not necessarily follow. In this paper, I will first briefly show why Kim’s argument against non-reductive physicalism need not apply to emergentism. Next, I will present a physicalistic account of emergentism offered by Jason Megill in his paper “A Defense of Emergence.” This will be followed by an examination of some of the limitations of Megill’s account, in particular, (...) his failure to adequately account for the causal powers of higher level physical properties independent of realization. Finally, I will offer a suggestion on how Megill might avoid the difficulties raised by appealing to the concept of wide realization espoused by Robert Wilson in his paper “Two Views of Realization.” The overarching theme of the paper centers on the idea that the realization requirement is where the action is, in terms of making emergentism compatible with physicalism, and is capable of being tinkered with by the emergentist and physicalist alike. (shrink)

The present paper is part of a larger project of investigating how far puzzling questions about Carnap’s philosophical deflationism – as expressed most prominently in “Empricism, Semantics and Ontology”1 – can be answered by reference to his own preferred position in areas upon which this meta-philosophical position can be expected to have a bearing. For that project the explorations below provide a starting point; on the present occasion they will, I hope, be found to be of independent interest. At issue (...) is the question of what makes Carnap’s The Logical Structure of the World a pre-physicalist work. (shrink)

Grand debates over reduction and emergence are playing out across the sciences, but these debates have reached a stalemate, with both sides declaring victory on empirical grounds. In this book, Carl Gillett provides new theoretical frameworks with which to understand these debates, illuminating both the novel positions of scientific reductionists and emergentists and the recent empirical advances that drive these new views. Gillett also highlights the flaws in existing philosophical frameworks and reorients the discussion to reflect the new scientific advances (...) and issues, including the nature of 'parts' and 'wholes', the character of aggregation, and thus the continuity of nature itself. Most importantly, Gillett shows how disputes about concrete scientific cases are empirically resolvable and hence how we can break the scientific stalemate. Including a detailed glossary of key terms, this volume will be valuable for researchers and advanced students of the philosophy of science and metaphysics, and scientific researchers working in the area. (shrink)

The aim of this paper is to determine the plausibility of Robert Kirk's strict implication thesis as an explication of physicalism and its relation to Jackson and Chalmer's notion of application conditionals, to the notion of global supervenience and to a posteriori identities. It is argued that the strict implication thesis is subject to the same objection that affects the notion of global supervenience. Furthermore, reference to an idealised physics in the formulation of strict implication threatens to make the thesis (...) vacuous. Third, Kirk's claim that the strict implication thesis does not entail reduction of the mental to the physical (excluding phenomenal properties) is untenable if a functional model of reduction is preferred over Nagel's classical model. Finally, Kirk's claim that the physical facts entail in an a priori way the fact that certain brain states feel somehow seems to be unfounded. (shrink)

This paper rehearses some relatively old arguments about how any coherent notion of free will is not only compatible with but depends on determinism. However the mind-brain identity theory is attacked on the grounds that what makes a physical event an intended action A is that the agent interprets the physical phenomena as doing A. The paper should have referred to the monograph Intention by Elizabeth Anscombe, which discusses in detail the fact that the same physical event can have multiple (...) descriptions, using different ontologies. (shrink)

In this paper I compare two versions of non-eliminative physicalism (reductive physicalism and supervenience physicalism) with four of the five theses of classical theism: divine non-contingency, divine transcendence, divine simplicity, and the aseity thesis. I argue that:1. Both physicalism (either version) and classical theism require intuition-transcending identifications of some properties or possibilities.2. Among other identifications, both reductive physicalism and classical theism need to identify psychological with functional properties.3. Both reductive physicalism and classical theism have a problem with consciousness.4. Both reductive (...) physicalists and classical theists should distinguish fine and coarse grained theories of properties. (shrink)